68876387506 has 8 divisors (see below), whose sum is σ = 103316075244. Its totient is φ = 34437695760.

The previous prime is 68876387407. The next prime is 68876387509. The reversal of 68876387506 is 60578367886.

It can be written as a sum of positive squares in 2 ways, for example, as 61427144025 + 7449243481 = 247845^2 + 86309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68876387509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41545 + ... + 373468.

Almost surely, 2^68876387506 is an apocalyptic number.

68876387506 is a deficient number, since it is larger than the sum of its proper divisors (34439687738).

68876387506 is a wasteful number, since it uses less digits than its factorization.

68876387506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497996.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 68876387506 in words is "sixty-eight billion, eight hundred seventy-six million, three hundred eighty-seven thousand, five hundred six".